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Finding the Fourth Proportional to 13,065.67, 18,032.92 and 7,400.73

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Solution

The fourth proportional to 13,065.67, 18,032.92 and 7,400.73 is: 10,214.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,065.67 : 18,032.92 = 7,400.73 : x
  2. Step 2: Convert to fraction form
    13,065.67/18,032.92 = 7,400.73/x
  3. Step 3: Cross multiply
    13,065.67x = 18,032.92 × 7,400.73
  4. Step 4: Simplify right side
    13,065.67x = 133,456,772.03
  5. Step 5: Solve for x
    x = 133,456,772.03/13,065.67
  6. Step 6: Final answer
    x = 10,214.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.